[SIP Beyond VoIP] Conference Screen Sharing/Video - 488 Not Acceptable Here

Adrian Georgescu ag at ag-projects.com
Mon Jul 17 17:43:15 CEST 2017



> On 17 Jul 2017, at 16:02, Jonathan Steel <mail at jsteel.org> wrote:
> 
> Thanks for your reply. Sure, a point in the right direction or to
> learn more about how this all works is great. I wasn't expecting this
> to be a simple answer/fix!
> 
> 1. I believe I needed to run MSRP to get screen sharing working. If I
> stop MSRP I'm no longer able to do IM/text OR screen sharing.

For p2p screensharing Blink uses MSRP. But SylkServer conference has no such support. There is no multi-party VNC sharing feature in either


> 
> 2. I believe the screen sharing is using VNC, not WebRTC. At least I'm
> using Blink for the client software, not a web browser. If I uninstall
> x11vnc it breaks the screen sharing; confirmation that it is VNC-based.

Yes

> 
> 4. I'm running this for clients internally, so I don't believe I need
> a public IP address.
> 

Maybe it works.

> Does that answer your points sufficiently? Does it shed any light on
> my issue?
> 

Still not sure what do you want to accomplish. I can guess but I may be wrong:

Multi party screensharing works with Blink for Mac only and is using streaming jpegs over Http. Client can be Blink or a web browser

Videconference is possible using WebRTC tech either a web browser or SylkClient


> Thanks,
> 
> -- 
> Jonathan
> 
>> On 2017-07-17 14:42, Adrian Georgescu wrote:
>> Hard to make a single answer for your compkex question. I will give
>> you some clues to improve navigating the software.
>> 1. MSRP is used for a text chat room
>> 2. Video room uses WebRTC (no SIP or MSRP protocols involved)
>> 3. The two above are disjunct worlds
>> 4. SylkServer must use a public IP
>> 5. You don't need an MSRP relay in combination with SylkServer as long
>> as you stick with point 4
>> Adrian
>>> On 17 Jul 2017, at 14:37, Jonathan Steel <mail at jsteel.org> wrote:
>>> I've just set up a basic install of OpenSIPS and SylkServer and everything
>>> is working apart from screen sharing and video in a conference. It works OK
>>> one to one (via OpenSIPS not through SylkServer). To confirm, audio and IM
>>> work fine in a conference through SylkServer.
>>> Here's an error from the SylkServer that I think is relevant:
>>> https://bpaste.net/show/fdd1233513d9
>>> (488 Not Acceptable Here)
>>> My setup is as follows:
>>> OpenSIPS + MSRPRelay:
>>>   sip.dev.lan
>>>   10.74.6.250
>>> SylkServer:
>>>   meet.sip.dev.lan
>>>   10.74.6.251
>>> Client:
>>>   Blink
>>>   10.74.11.137
>>> Does SylkServer run its own MSRPRelay and does it need to be configured
>>> to use the one on the OpenSIPS server instead? Otherwise what do you
>>> think I'm missing?
>>> Thanks,
>>> --
>>> Jonathan
>>> _______________________________________________
>>> SIPBeyondVoIP mailing list
>>> SIPBeyondVoIP at lists.ag-projects.com
>>> http://lists.ag-projects.com/mailman/listinfo/sipbeyondvoip
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